Hydrocarbon burner



Aug. ,23, 1927. C. A. BERKINS HYDRQCARBON BURNER ,Filed oct. '28, 19:22v

Patented Aug. 23, 1927.

AuNtrial) STA i CLARENOEA. BERxINs, 0F MINNEAPoLrs, MIiTNEsoTA.

HYDROCARBON BURNER.-

Applicaton filed October 28, 1922. Serial No. 597,453.

present invention relates to hydro-carbon burners adapted for general use in furnaces, boilers, stoves and the like, and is in the nature of an improvement on the burner disclosed and claimed in my prior Patent No. 1,444,766 of date Feb. 6, 1923.

Generally stated, the invention consistsof Ithe novel constructionV and combinationsV of parts hereinafter described and defined in the claims. f fj The. present invention is directed particularly to the improvement of the generating cones, air intake tubes, and their relative arrangement in respect to each other and to the basins below the cones. y

In the accompanying drawings, which illustrate 4a commercial form of the improved burner, like characters indicate like parts throughout the several views.

Referring to the drawings:

yFig. 1 is a perspective with some parts broken away, showing a heater, such as a hot water heater or steam boiler, and illustrating the application of one' of my improved burners therein;

Fig. 2 is a plan view of the burner with some parts broken away and some parts removed; and

Fig. 3 is a vertical section ofthe burner on the line 3-3 of Fig. 2.

Of the parts of the heater, the numeral 4 indicates the body shell, the numeral 5 the grates, and the numeral 6 the ash pit door opening, and from which latter the door has been removed.

The complete burner, as preferably constructed, comprises a hollow cast base or box 7 of oblong form, open at its bottom, and closed at its top, except for a large central air intake port 8 that is preferably approximately rectangular in form. On each side of the air port 8, the top plate of the base 7 is formed with depressed annular basins 9, from the centers of which rise hollow cones 10, which latter, however, are not the generating cones proper. Surplus oil overflow pipes 11 extend downward from the basins 9. Fluid fuel supply pipes 12 lextend axially upward through the Acones 10 and have threaded engagement therewith and the threaded ends project above said cones to adjustably support the generating cones presently to be described.

The fuel supply pipes 12, in the arrangement illustrated, are provided with normally open valves 13 having projecting arms 14 eoY to ay common supply pipe 16. `The said ar-.-

rangement of pipes and valves, however, const-itutes no part of my invention. f, .A j'

The hollowbase 7 restsV on the grates 5 and should be surrounded by ashes or, any other passes through the fire box mustjpass upward through the central opening The numeral 17 indicates the uprlght rectangular body portion of the air intake stack,

ward throughI the air port 8 of the base 7. At its upper portion, said stack 17 has oppositely turned and downwardly extended `air tubes 18, the lower ends of which are located suitable material, .so that all of the air that the lower end of which is open and fits down-.1.

slightly above but concentric to the respec-jzf:

tive basins 9. 'f y The vaporfgenerating cones 19 are preferably hollow cast structures that' are spaced from the cones 10 and are adjustably screwed onto the threaded upper ends of the fuelcs pipes 12. The exterior surfaces of said generating cones 19 are formed with circumferentially extended ledges of progressively increasing diameter. These ledges delay the downward flow of the oil or iiuid fuel and cause the latter to flow in riflies, which insures better and more complete` vaporization of the fluid fuel.

A slight distance above the upper ends of the generating cones 19, the air tubes 18 are provided with internal annular ribs 2O that contract the diameter of the air passage and thereby cause the air tubes to act as Venturi tubes in that the air will move more rapidly, as it passes through the contracted passages vformed by said ribs 20, than it does at any other point highervup or further down, except at the place where the air moves radi ally outwardy through the escape passages Vformed between the extreme lower ends of said tubes 18 and the upper portions of the basins 9. i

The vertical adjustability of the generating cones 19 in respect to the lower ends of the tubes 18 and in respect to the contracted passages formed by the ribs 20 is highly important because it permits the cones to be set for just the right adjustment to produce the mosty efficient generating and burning action. Moreover, the said generating cones be yalmost instantaneous.

are subjected to very intense heat and, hence, will require replacement from time to time and this replacement may be easily made by screwing the generating-*cones o'tli from and onto the threaded upper ends of the fuel pipes 12. Furthermore, the said generating cones are spaced from the cones 10 so that they will be subjected to heat both on eX- terior and interior surfaces and, hence, will get hot `quicker and :will reach aV higher temperature than with the arrangement, for example, illustrated in my prior patent wherein' the generating cones on their interiors were exposed to the cool air.

The oil overflowing from the upper ends of the fuel lsupply tubes 12 will How vdownward over the generating cones 1'9 i-n a manner already indicated, and when said generating cones are at high temperature, say Ired hot, the vaporization of the oil will The contracted passages above the cones cause the air to move at relatively high velocity just as it comes into contact with the generated fuel vapor and-then to move at slightly less velocity over the outer surfaces of the cones, Vand then finally to sweep outward again under high velocity as the ignited gases escape radially outward between the lower ends of the tubes 18 and the rims of the basins 19. 'These several features, I have found in actual practice, greatly increase the 'eficiency of the burner.

The burner illustrated is a duplex burnfer, but it will, of course, be understood that so far as my present invention is concerned, the saine might 'be a single bur-ner.

Vhat I claim is:-

1. A fluid fuel burner comprising an air tube having a depending delivery end arranged for the downward delivery of air, a generating cone extended from a point be'- ew axially up into the delivery end of said.4

tube but spaced therefrom, salol air tube at a point slightly above said :cone having an internal vani'iular flange forming a contraeA tion and causing the downwardly delivered air to be rconcentrated toward the top of -said cone and to move with relatively high velocity, and means for delivering fluid fuel to the outer surface of said generating cone.

9. A burner comprising a base having an lannular basin with a raised conical central said basin, the downturned port-ion of said air tub'e having a contraction located close to but above the upper portion of said generating cone.

In testimony whereof I-a'fiiX my signature.

'CLARENCE A. BERKINS. 

